.product-hero {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(180deg, #f6f4ee 0%, #e8f0ea 100%);
    padding: 120px var(--gutter) 0;
    overflow: hidden;
  }
  .product-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    max-width: var(--container);
    margin: 0 auto;
    align-items: center;
    min-height: calc(100vh - 120px);
  }
  .product-hero h1 {
    font-size: clamp(56px, 8vw, 132px);
    font-weight: 300;
    letter-spacing: -0.045em;
    line-height: 0.92;
  }
  .product-hero .visual {
    position: relative;
    height: 90vh;
    max-height: 900px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .product-hero .visual img {
    height: 100%;
    width: auto;
    filter: drop-shadow(0 60px 80px rgba(20,48,36,0.18));
  }
  .product-hero .visual::before {
    content: '';
    position: absolute;
    width: 70%;
    height: 70%;
    background: radial-gradient(circle, rgba(132,212,154,0.25), transparent 60%);
    filter: blur(40px);
    z-index: 0;
  }

  /* ─── BENTO SPECS GRID ─── */
  .spec-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3px;
    background: var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    margin-top: 56px;
  }
  .spec-grid .cell {
    background: var(--paper);
    padding: 32px;
    transition: background 200ms;
  }
  .spec-grid .cell:hover { background: var(--cream); }
  .spec-grid .cell.hero {
    grid-column: span 2;
    grid-row: span 2;
    padding: 48px;
    background: var(--ink);
    color: var(--paper);
  }
  .spec-grid .cell.hero:hover { background: #0f2a1a; }
  .spec-grid .cell.hero .val {
    font-size: 80px;
    color: var(--algae);
  }
  .spec-grid .cell.hero .label { color: rgba(255,255,255,0.55); }
  .spec-grid .cell.hero .sub { color: rgba(255,255,255,0.55); font-size: 14px; }
  .spec-grid .cell.wide {
    grid-column: span 2;
  }
  .spec-grid .cell .label {
    font-family: var(--font-mono); font-size: 11px;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--muted); margin-bottom: 12px;
  }
  .spec-grid .cell .val {
    font-size: 32px; font-weight: 300; letter-spacing: -0.02em; line-height: 1;
  }
  .spec-grid .cell .sub { font-size: 13px; color: var(--muted); margin-top: 8px; }

  /* ─── CHLORELLA PULSE ─── */
  @keyframes pulse-algae {
    0%, 100% { box-shadow: 0 0 0 0 rgba(132,212,154,0); }
    50%       { box-shadow: 0 0 48px 8px rgba(132,212,154,0.22); }
  }
  .pulse-glow { animation: pulse-algae 3.5s ease-in-out infinite; }

  @media (max-width: 880px) {
    .spec-grid { grid-template-columns: 1fr 1fr; }
    .spec-grid .cell.hero { grid-column: span 2; grid-row: span 1; }
    .spec-grid .cell.hero .val { font-size: 56px; }
    .product-hero-grid { grid-template-columns: 1fr; padding: 40px 0; }
    .product-hero .visual { height: 60vh; }
  }

  .feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
  }
  .feature-block.reverse { direction: rtl; }
  .feature-block.reverse > * { direction: ltr; }
  .feature-block .visual {
    aspect-ratio: 1/1;
    background: var(--mist);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
  }
  @media (max-width: 880px) {
    .feature-block { grid-template-columns: 1fr; gap: 32px; }
    .feature-block.reverse { direction: ltr; }
  }